2 * Copyright (c) 1995, Mike Mitchell
3 * Copyright (c) 1984, 1985, 1986, 1987, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * $FreeBSD: src/sys/netipx/ipx_outputfl.c,v 1.14.2.1 2000/05/01 01:10:24 bp Exp $
37 * $DragonFly: src/sys/netproto/ipx/ipx_outputfl.c,v 1.9 2008/05/14 11:59:24 sephe Exp $
40 #include <sys/param.h>
41 #include <sys/systm.h>
43 #include <sys/socket.h>
46 #include <net/route.h>
52 static int ipx_copy_output
= 0;
55 ipx_outputfl(struct mbuf
*m0
, struct route
*ro
, int flags
)
57 struct ipx
*ipx
= mtod(m0
, struct ipx
*);
58 struct ifnet
*ifp
= NULL
;
60 struct sockaddr_ipx
*dst
;
61 struct route ipxroute
;
68 bzero((caddr_t
)ro
, sizeof(*ro
));
70 dst
= (struct sockaddr_ipx
*)&ro
->ro_dst
;
71 if (ro
->ro_rt
== NULL
) {
72 dst
->sipx_family
= AF_IPX
;
73 dst
->sipx_len
= sizeof(*dst
);
74 dst
->sipx_addr
= ipx
->ipx_dna
;
75 dst
->sipx_addr
.x_port
= 0;
77 * If routing to interface only,
78 * short circuit routing lookup.
80 if (flags
& IPX_ROUTETOIF
) {
81 struct ipx_ifaddr
*ia
= ipx_iaonnetof(&ipx
->ipx_dna
);
84 ipxstat
.ipxs_noroute
++;
92 } else if ((ro
->ro_rt
->rt_flags
& RTF_UP
) == 0) {
94 * The old route has gone away; try for a new one.
100 if (ro
->ro_rt
== NULL
|| (ifp
= ro
->ro_rt
->rt_ifp
) == NULL
) {
101 ipxstat
.ipxs_noroute
++;
106 if (ro
->ro_rt
->rt_flags
& (RTF_GATEWAY
|RTF_HOST
))
107 dst
= (struct sockaddr_ipx
*)ro
->ro_rt
->rt_gateway
;
110 * Look for multicast addresses and
111 * and verify user is allowed to send
114 if (dst
->sipx_addr
.x_host
.c_host
[0]&1) {
115 if ((ifp
->if_flags
& (IFF_BROADCAST
| IFF_LOOPBACK
)) == 0) {
116 error
= EADDRNOTAVAIL
;
119 if ((flags
& IPX_ALLOWBROADCAST
) == 0) {
123 m0
->m_flags
|= M_BCAST
;
126 if (htons(ipx
->ipx_len
) <= ifp
->if_mtu
) {
127 ipxstat
.ipxs_localout
++;
128 if (ipx_copy_output
) {
129 ipx_watch_output(m0
, ifp
);
131 error
= ifp
->if_output(ifp
, m0
, (struct sockaddr
*)dst
,
135 ipxstat
.ipxs_mtutoosmall
++;
139 if (ipx_copy_output
) {
140 ipx_watch_output(m0
, ifp
);
144 if (ro
== &ipxroute
&& (flags
& IPX_ROUTETOIF
) == 0 &&
153 * This will broadcast the type 20 (Netbios) packet to all the interfaces
154 * that have ipx configured and isn't in the list yet.
157 ipx_output_type20(struct mbuf
*m
)
160 union ipx_net
*nbnet
;
161 struct ipx_ifaddr
*ia
, *tia
= NULL
;
166 struct sockaddr_ipx dst
;
169 * We have to get to the 32 bytes after the ipx header also, so
170 * that we can fill in the network address of the receiving
173 if ((m
->m_flags
& M_EXT
|| m
->m_len
< (sizeof(struct ipx
) + 32)) &&
174 (m
= m_pullup(m
, sizeof(struct ipx
) + 32)) == NULL
) {
175 ipxstat
.ipxs_toosmall
++;
178 ipx
= mtod(m
, struct ipx
*);
179 nbnet
= (union ipx_net
*)(ipx
+ 1);
181 if (ipx
->ipx_tc
>= 8)
184 * Now see if we have already seen this.
186 for (ia
= ipx_ifaddr
; ia
!= NULL
; ia
= ia
->ia_next
)
187 if(ia
->ia_ifa
.ifa_ifp
== m
->m_pkthdr
.rcvif
) {
191 for (i
=0;i
<ipx
->ipx_tc
;i
++,nbnet
++)
192 if(ipx_neteqnn(ia
->ia_addr
.sipx_addr
.x_net
,
197 * Don't route the packet if the interface where it come from
198 * does not have an IPX address.
204 * Add our receiving interface to the list.
206 nbnet
= (union ipx_net
*)(ipx
+ 1);
207 nbnet
+= ipx
->ipx_tc
;
208 *nbnet
= tia
->ia_addr
.sipx_addr
.x_net
;
211 * Increment the hop count.
214 ipxstat
.ipxs_forward
++;
217 * Send to all directly connected ifaces not in list and
218 * not to the one it came from.
220 m
->m_flags
&= ~M_BCAST
;
221 bzero(&dst
, sizeof(dst
));
222 dst
.sipx_family
= AF_IPX
;
224 dst
.sipx_addr
.x_host
= ipx_broadhost
;
226 for (ia
= ipx_ifaddr
; ia
!= NULL
; ia
= ia
->ia_next
)
227 if(ia
->ia_ifa
.ifa_ifp
!= m
->m_pkthdr
.rcvif
) {
228 nbnet
= (union ipx_net
*)(ipx
+ 1);
229 for (i
=0;i
<ipx
->ipx_tc
;i
++,nbnet
++)
230 if(ipx_neteqnn(ia
->ia_addr
.sipx_addr
.x_net
,
235 * Insert the net address of the dest net and
236 * calculate the new checksum if needed.
238 ifp
= ia
->ia_ifa
.ifa_ifp
;
239 dst
.sipx_addr
.x_net
= ia
->ia_addr
.sipx_addr
.x_net
;
240 ipx
->ipx_dna
.x_net
= dst
.sipx_addr
.x_net
;
241 if(ipx
->ipx_sum
!= 0xffff)
242 ipx
->ipx_sum
= ipx_cksum(m
, ntohs(ipx
->ipx_len
));
244 m1
= m_copym(m
, 0, M_COPYALL
, MB_DONTWAIT
);
246 error
= ifp
->if_output(ifp
, m1
,
247 (struct sockaddr
*)&dst
, NULL
);
248 /* XXX ipxstat.ipxs_localout++; */